Rear wheel rim off-set (Again - sorry)

This one is off 10mm or more. (NOT the fender)

Hi Concours

Thank you for the reply with photo

Are you saying that the rear wheel rim being 10mm off-set to the left is acceptable ?

Is the front wheel on the bike in the photo central in the forks?
And is the back wheel rim in line with the front wheel rim
Or off-set but in-line front/back as per the right hand example in Greg's diagram in his post 5 above ?

Does the bike in the photo track straight and true ?

Staytite said:

I have found in the past that having the front wheel perfectly central in the forks
eliminated the handle bar shake. And much reduced the vibration I thought was
due to the Isolastics.

Click to expand...

I never actually checked if the rim was centered in the front forks on a disk front end until today. My rider's front wheel has never been apart and it is centered within 1/16" (hard to measure). That is set by the spacers, not the wheel truing as the wheel appears to have a factory standard. I've not seen it in a factory document but the OEM wheels I've taken apart are pretty consistent and the various write-ups I've seen agree and I just checked my rider and it agrees. The right side of the rim is offset 1/2" from the right side of the hub where the disk mounts. For pictures look and a write-up, look here: https://www.gregmarsh.com/MC/Norton/FrontLacing.aspx. My handlebars do not shake but the bike was becoming more uncomfortable in corners - I'm sure it has nothing to do with the factory assembled rear wheel - the isolastics are original and sagging and the the swingarm spindle is toast so both are in the process of being changed.

Hi Greg

Thank you for your reply and pictures and I've looked at your write up of your wheel built on your link.

My front wheel is a drum ( It works, has good feel and will lock up the front wheel if need be )

But I think the disc or drum hub is irrelevant, it's the location of the rim between the fork legs that is important.

I measure from the edge of the rim to the mudguard bridge on each side to establish if the rim is central or not.
The edge of the rim is roughly level with the drilled lugs for the mudguard bridge so more accurate than elsewhere
on the bridge.

Some time ago I found the front rim of my working Commando to be about 5 mm off set so had it moved
by 2.5mm to be central and the difference was amazing. No shaking of the handle bars, less vibration and a
much more stable feel to the handling.

So for my new Commando build with the front wheel in "new" forks exactly central my theory was to ensure
the rear wheel rim was exactly in line with the front as per the centre example in your diagram of your post 5
and life would be good ! Hence my use of masking tape, top tube centre pencil marks, straight edge and plumb
lines !

Staytite said:

Hi Concours

Thank you for the reply with photo

Are you saying that the rear wheel rim being 10mm off-set to the left is acceptable ?

Is the front wheel on the bike in the photo central in the forks?
And is the back wheel rim in line with the front wheel rim
Or off-set but in-line front/back as per the right hand example in Greg's diagram in his post 5 above ?

Does the bike in the photo track straight and true ?

Click to expand...

it's a friends bike. No, not acceptable to me, but, not uncommon either.